Booster seat



FIG. 1 is a front left side perspective view of a booster seat showingmy new design;

FIG. 2 is a top view of the booster seat of FIG. 1;

FIG. 3 is a bottom view of the booster seat of FIG. 1;

FIG. 4 is a front view of the booster seat of FIG. 1;

FIG. 5 is a right side view of the booster seat of FIG. 1, the left sidebeing a mirror image; and,

FIG. 6 is a back view of the booster seat of FIG. 1.

The broken line showing of other seats nesting with the booster seat isfor environmental purposes only and forms no part of the claimed design.FIGS. 2 through 6 have been shown on a reduced scale.

The ornamental design for a booster seat, as shown and described.